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Eos Chasma is a chasma in the southern part of the Valles Marineris canyon system of the Margaritifer Sinus quadrangle (MC-19) region of the planet Mars. Eos Chasma’s western floor is mainly composed of an etched massive material composed of either volcanic or eolian deposits later eroded by the Martian wind. The eastern end of the Eos chasma has a large area of streamlined bars and longitudinal striations. This is interpreted to be stream-carved plateau deposits and material transported and deposited by flowing fluid. Ganges Chasma is an offshoot of Eos Chasma. MRO discovered sulfate, hydrated sulfate, and iron oxides in Eos Chasma. 〔Murchie, S. et al. 2009. A synthesis of Martian aqueous mineralogy after 1 Mars year of observations from the Mars Reconnaissance Orbiter. Journal of Geophysical Research: 114.〕 According to an analysis by Vicky Hamilton of the University of Hawaii, Eos Chasma may be the source of the ALH84001 meteorite, which some believe to be evidence of past life on Mars. However, the analysis was not conclusive, in part because it was limited to parts of Mars not obscured by dust. Image:Eos Chaos.jpg|Eos Chaos--lies at southern edge of Eos Chasma, as seen by HiRISE. To see many fine layers click on image. ==See also== *Geography of Mars 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Eos Chasma」の詳細全文を読む スポンサード リンク
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